An appeal has been launched to help trace two teenage girls who have been missing for a day.

Friends Erin Gordon, 14, and Sarah Tyrell, 13, were last seen at their homes in Clydebank, West Dunbartonshire, on Thursday afternoon.

Both girls are described as vulnerable and their families are anxious to find them.

Erin is described as around 5ft 1in, slim build, with light brown long hair. She was wearing a black zipper jacket, blue jeans and white trainers.

Sarah is described as slim, around 5ft tall, long brown wavy hair and possibly wearing a belly top, jeans and either a pink jacket or a mustard coloured puffa jacket. She was also wearing white/silver trainers.

A police spokeswoman said extensive enquiries are under way and it is believed that both girls are still in the Clydebank area.

Sergeant Kirsten Stobo, of Dumbarton Police office, said: "Erin and Sarah's families are becoming increasingly concerned for their safety given their age and the length of time they have been missing.

"We have been analysing CCTV and engaging with local businesses in an effort to trace both girls safe and well.

"I would appeal directly to Erin and Sarah to contact their family or police Scotland to confirm they are safe and well."

Anyone with information is asked to call officers at Dumbarton Police Office on 101.